Difference between SS316 and SS316L. what is the selection criteria?

𝐒𝐭𝐚𝐢𝐧𝐥𝐞𝐬𝐬 𝐬𝐭𝐞𝐞𝐥 𝟑𝟏𝟔/𝟑𝟏𝟔 𝐋: Stainless steel 316 and 316L are both austenitic stainless steels with similar compositions, but they have some key differences. The "L" in 316L stands for "low carbon," indicating that it has a lower carbon content than 316. 𝕊𝕥𝕒𝕚𝕟𝕝𝕖𝕤𝕤 𝕊𝕥𝕖𝕖𝕝 𝟛𝟙𝟞: ▪️Composition: Contains about 16-18% chromium, 10-14% nickel, 2-3% molybdenum, and small amounts of other elements. 👉🏼Use: Widely used in chemical processing equipment, pharmaceuticals, and marine applications. Commonly used in situations where exposure to harsh chemicals and corrosive environments is expected. Suitable for high-temperature applications. 𝕊𝕥𝕒𝕚𝕟𝕝𝕖𝕤𝕤 𝕊𝕥𝕖𝕖𝕝 𝟛𝟙𝟞𝕃: Composition: Similar to 316 but with a lower carbon content (max 0.03% compared to 0.08% in 316). 👉🏼Use: Preferred in applications where welding is required, as the lower carbon content minimizes the risk of carbide precipitation and subsequent corrosion. Used in industries like food processing, medical devices, and pharmaceuticals where corrosion resistance is critical. Suitable for environments with elevated temperatures and aggressive chemicals. 🔴Importance: ✅Corrosion Resistance: Both grades offer excellent corrosion resistance, making them ideal for various environments, including those with exposure to acids and chlorides. ✅Weldability: 316L is preferred for welding due to its reduced susceptibility to sensitization, which can occur during welding and lead to corrosion issues. ✅Temperature Resistance: Both grades exhibit good resistance to high temperatures, making them suitable for applications involving heat. ⚠️How to Select: ✅Corrosive Environment: If your application involves exposure to harsh chemicals or corrosive substances, either 316 or 316L would be suitable, but 316L is often preferred for better corrosion resistance after welding. ✅Welding Requirements: If welding is a critical aspect of your project, choosing 316L can help minimize the risk of corrosion issues associated with welding. ✅Cost Consideration: Generally, 316L may be slightly more expensive than 316 due to its lower carbon content and the additional processing involved.